參數(shù)資料
型號(hào)： PC33879DWBR2
廠商： FREESCALE SEMICONDUCTOR INC
元件分類(lèi)： 運(yùn)動(dòng)控制電子
英文描述： BRUSH DC MOTOR CONTROLLER, 1 A, PDSO32
封裝： PLASTIC, SOIC-32
文件頁(yè)數(shù)： 7/20頁(yè)
文件大?。?/td> 747K
代理商： PC33879DWBR2
ANALOG INTEGRATED CIRCUIT DEVICE DATA
33879
15
SPI DEFINITION
On each SPI communication, a 16-bit command word is sent
to the 33879 and a 16-bit status word is received from the
33879. The MSB is sent and received first. As shown in Table 1,
the Command Register defines the position and operation the
33879 will perform on rising edge of CS. The Fault Register,
shown in Table 2, defines the previous state status of the output
driver. Table 3 identifies the type of fault and the method by
which the fault is communicated to the microprocessor.
Table 1. Command Register Definition
0 = Bits 0 to 7, Output commanded OFF.
0 = Bits 8 to 15, Open Load Detect Current OFF.
1 = Bits 0 to 7, Output commanded ON.
1 = Bits 8 to 15 Open Load Detect Current ON.
Table 2. Fault Register Definition
0 = Bits 0 to 7, No Fault at Output.
1 = Bits 0 to 7, Output Short-to-Battery, Short- to-GND, Open Load,
or TLIM.
Bits 8 to 15 will always return “0”.
Table 3. Fault Operation
MSB
LSB
Bit 15
Bit 14
Bit 13
Bit 12
Bit 11
Bit 10
Bit 9
Bit 8
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
ON/OFF
Open
Load
Detect
8
ON/OFF
Open
Load
Detect
7
ON/OFF
Open
Load
Detect
6
ON/OFF
Open
Load
Detect
5
ON/OFF
Open
Load
Detect
4
ON/OFF
Open
Load
Detect
3
ON/OFF
Open
Load
Detect
2
ON/OFF
Open
Load
Detect
1
ON/OFF
OUT 8
ON/OFF
OUT 7
ON/OFF
OUT 6
ON/OFF
OUT 5
ON/OFF
OUT 4
ON/OFF
OUT 3
ON/OFF
OUT 2
ON/OFF
OUT 1
MSB
LSB
Bit 15
Bit 14
Bit 13
Bit 12
Bit 11
Bit 10
Bit 9
Bit 8
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
00000000
OUT 8
Status
OUT 7
Status
OUT 6
Status
OUT 5
Status
OUT 4
Status
OUT 3
Status
OUT 2
Status
OUT 1
Status
Serial Output (DO) Pin Reports
Overtemperature
Fault reported by Serial Output (DO) pin.
Overcurrent
DO pin reports short to battery/supply or overcurrent condition.
Output ON Open Load Fault
Not reported.
Output OFF Open Load Fault
DO pin reports output OFF open load condition only with Open Load Detect Current enabled.
DO pin will report “0” for Output OFF Open Load Fault with Open Load Detect Current disabled.
Device Shutdowns
Overvoltage
Total device shutdown at VPWR = 27 V–30 V. Resumes normal operation with proper voltage. All
outputs assuming the previous state upon recovery from overvoltage.
Overtemperature
Only the output experiencing an overtemperature shuts down. Output assumes previous state upon
recovery from overtemperature.
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Freescale Semiconductor, Inc.
For More Information On This Product,
Go to: www.freescale.com
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